top of page
Calendar of Upcoming Events

Below are training events currently scheduled:


                                    - Interpreting NGS Geodetic Control Data Sheets

                                    - Datum Transformations

                                    - History of Geodetic Datums of the United States

                                    - Interpreting NGS Geodetic Control Data Sheets

                                    - Practical Geodesy for Practical Surveyors


                 Check back later to see where Dave is presenting next!




What people are saying about Dave and Base 9 Geodetic Consulting Services workshops:


  • "You are the Neil deGrasse Tyson of Surveying"

  • "Great speaker!! Very informed; please come back."

  • "Always learn new things from David Doyle.""

  • "A great speaker. Very knowledgeable and easy to listen to. Lots of good information."

  • "Extremely informative. Dave is always an excellent presenter."

  • "Would like to see this seminar each year to keep updated on NSRS."

  • "Invaluable presenter with wealth of knowledge and the wisdom to make understanding content easier."

  • "Instructor extremely informative and knowledgeable. Would recommend every surveyor take his class."

  • "This course should be repeated in future conferences."

  • "Good speaker and did not talk over our heads."

  • "Very experienced, based on 'real world' experience."




You can contact these organizations, who have hosted Base 9 Geodetic Consulting Services seminars, for references/reviews:

Maryland Surveyors Society - October 2021

Virginia Association of Surveyors - September 2021, January 2021

Texas Society of Professional Surveyors - September 2021

Professional Surveyors Association of Nebraska - June 2021

New Jersey Society of Professional Land Surveyors - March 2021, February 2020

Tennessee Association of Professional Surveyors - March 2020

Land Surveyors Association of Washington - February 2020

West Virginia Society of Professional Surveyors - February 2020

Vermont Society of Land Surveyors - September 2019

Arizona Professional Land Surveyors - March 2019





Videos/recordings of Dave's seminars:

-- "Relationship of and transformations between most common reference frames used in the U.S."; January 30, 2015 

-- "Modernization of the National Spatial Reference System "; March 14, 2014

-- Fundamentals of Geodesy, November 14, 2014, 4:24

-- NGS Datasheets Tips, January 12, 2015, 3:59

bottom of page